The Solar Bag

Mouse over above image to zoom

Now includes string!

This 50 foot solar bag floats with the power of the sun. Made of ultra-thin black plastic (many times thinner than a plastic trash bag), the Solar Bag holds over 200 cubic feet of air. Simply fill by running, tie off the ends and let the sun's heat do the rest. Within 5 minutes, the enormous bag will rise into the air and create a sight to behold. The most visual way we've found to demonstrate scientific principles such as density and buoyancy.

Can be used over and over again. Includes holes so that the bag can be tethered using string.